charcoal question

hello i'm a newbie in planted aquarium
i have a question about charcoal
my mother used to plant an orchid on a bag of charcoal (the one that we used for BBQ). she said that it contain carbon and orchid need it.
does it apply to aquatic plant too?

Lifetime Member

Yes, aquatic plants do in fact need carbon among many other nutrients and trace elements such as nitrate, potassium, iron, etc. Carbon is produced by respiration of all living organisms in the tank such as fish, snails, bacteria, and the plants themselves.

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